Display panel

ABSTRACT

A display panel includes a pixel arrangement structure. The pixel arrangement structure includes a plurality of first pixel rows and a plurality of second pixel rows arranged alternately. Each of the first pixel rows comprises a plurality of first pixels arranged at intervals, and each of the second pixel rows comprises a plurality of second pixels and a plurality of third pixels arranged alternately and at intervals. A shape of the first pixel comprises a shape formed by an arc. Each of the second pixel and the third pixel comprises a plurality of concave arcs and a plurality of convex arcs, the plurality of concave arcs and the plurality of convex arcs of the second pixel are alternately connected and form a closed figure, and the plurality of concave arcs and the plurality of convex arcs of the third pixel are alternately connected and form a closed figure.

CROSS REFERENCE

This application is a continuation-in-part application ofPCT/CN2019/116094, filed Nov. 6, 2019, which claims priority to ChinesePatent Application No. 201910100351.2 filed on Jan. 31, 2019 and also acontinuation-in-part of PCT/CN2018/077253 filed on Feb. 26, 2018, whichclaims priority to Chinese Patent Application No. 201810103217.3 filedon Feb. 1, 2018, all of which are herein incorporated by reference intheir entirety for all purposes.

FIELD OF INVENTION

The present disclosure relates to the field of display technologies, andmore particularly to a display panel.

BACKGROUND OF INVENTION

Luminescent material layers of pixels in conventional organic lightemitting diode (OLED) display panels are generally formed by evaporationprocesses. In the process of forming the luminescent material layers ofthe pixels, a certain gap should be reserved between the luminescentmaterial layers of two adjacent pixels to prevent luminescent materialsof different pixels from interfering with each other.

Due to limitation of a shape of the pixels and the gap between thepixels, unused space between the pixels in the conventional OLED displaypanel is relatively large, so an aperture ratio of the pixels in theconventional OLED display panel is relatively low.

Therefore, it is necessary to propose a new technical solution to solvethe above technical issues.

SUMMARY OF INVENTION

An object of the present disclosure is to provide a display panelcapable of preventing color drift from being over a predetermined rangeand effectively increasing a pixel aperture ratio.

In order to solve the above issues, a technical solution of anembodiment of the present disclosure is as follows.

A pixel arrangement structure includes a plurality of first pixel rowsand a plurality of second pixel rows arranged alternately. Each of thefirst pixel rows comprises a plurality of first pixels arranged atintervals, and each of the second pixel rows comprises a plurality ofsecond pixels and a plurality of third pixels arranged alternately andat intervals. A shape of the first pixel comprises a shape formed by anarc. Each of the second pixel and the third pixel comprises a pluralityof concave arcs and a plurality of convex arcs, the plurality of concavearcs and the plurality of convex arcs of the second pixel arealternately connected and form a closed figure, and the plurality ofconcave arcs and the plurality of convex arcs of the third pixel arealternately connected and form a closed figure.

In the pixel arrangement structure, the first pixel, the second pixel,and the third pixel have different colors.

In the pixel arrangement structure, the plurality of concave arcs of thesecond pixel have the same radius of curvature, and/or the plurality ofconcave arcs of the third pixel have the same radius of curvature.

In the pixel arrangement structure, the plurality of convex arcs of thesecond pixel have the same radius of curvature, and/or the plurality ofconvex arcs of the third pixel have the same radius of curvature.

In the pixel arrangement structure, a radius of curvature of theplurality of concave arcs of the third pixel is equal to a radius ofcurvature of the plurality of convex arcs of the third pixel, and/or aradius of curvature of the plurality of concave arcs of the second pixelis equal to a radius of curvature of the plurality of concave arcs ofthe second pixel.

In the pixel arrangement structure, the plurality of concave arcs ofeach of the third pixels are respectively opposite to the four firstpixels adjacent to the third pixel, and the plurality of concave arcs ofeach of the second pixels are respectively opposite to the four firstpixels adjacent to the second pixel; or the plurality of convex arcs ofeach of the third pixels are respectively opposite to the four firstpixels adjacent to the third pixel, and the plurality of convex arcs ofeach of the second pixels are respectively opposite to the four firstpixels adjacent to the second pixel.

In the pixel arrangement structure, a pixel density of the pixelarrangement structure ranges from 200 ppi to 600 ppi.

In the pixel arrangement structure, a distance from the plurality ofconcave arcs of the third pixel to an edge of the first pixel oppositeto the plurality of concave arcs of the third pixel and a distance fromthe plurality of concave arcs of the second pixel to an edge of thefirst pixel opposite to the plurality of concave arcs of the secondpixel are both a first length, a distance from a center of the thirdpixel to the plurality of concave arcs of the third pixel and a distancefrom a center of the second pixel to the plurality of concave arcs ofthe second pixel are both a second length, and a radius of the smallestcircumscribed circle of the first pixel is a third length; the firstlength ranges from 10 um to 30 um, the second length ranges from 10 umto 50 um, and the third length ranges from 4 um to 40 um.

In the pixel arrangement structure, a center of the first pixelcoincides with an end point of a radius of curvature of the plurality ofconcave arcs of the third pixel, and/or a center of the first pixelcoincides with an end point of a radius of curvature of the plurality ofconcave arcs of the second pixel.

In the pixel arrangement structure, a center of the first pixelcoincides with a center of a circle corresponding to the plurality ofconcave arcs of the third pixel, and/or a center of the first pixelcoincides with a center of a circle corresponding to the plurality ofconcave arcs of the second pixel.

In the pixel arrangement structure, the shape of the first pixel is anellipse.

In the pixel arrangement structure, the second pixel comprises fourconcave arcs and four convex arcs, which are alternately connected andform a closed figure, and the third pixel comprises four concave arcsand four convex arcs, which are alternately connected and form a closedfigure.

In the pixel arrangement structure, the second pixels and the thirdpixels are alternately arranged in at least one of a first direction, asecond direction, a third direction, and a fourth direction, the firstdirection is perpendicular to the second direction, the third directionis a direction having an angle of less than 90 degrees with the firstdirection, and the fourth direction is perpendicular to the thirddirection.

In the pixel arrangement structure, a shape of an edge of one of thesecond pixels and the third pixels in the third direction or the fourthdirection comprises a concave arc, a sum of a radius of curvature of ashape of an edge of the first pixels facing one of the second pixels andthe third pixels and a width of a predetermined gap is equal to a radiusof curvature of the concave arc included in the edge of one of thesecond pixels and the third pixels in the third direction or the fourthdirection.

In the pixel arrangement structure, the predetermined gap is a gapbetween an edge of one of the second pixels and the third pixels and anedge of each adjacent first pixel in one of the third direction and thefourth direction.

In the pixel arrangement structure, a width of the predetermined gap inthe third direction is equal to a width of the predetermined gap in thefourth direction.

In the pixel arrangement structure, an arc and an extended arc thereofcorresponding to an edge of third pixel facing the first pixel and anarc and an extended arc thereof corresponding to an edge of the secondpixel facing the first pixel form a predetermined shape, and thepredetermined shape comprises a circle or an ellipse.

In the pixel arrangement structure, a center of a shape of the firstpixels is the same as a center of the predetermined shape.

In the pixel arrangement structure, a radius of curvature of one of theplurality of concave arcs of the third pixel is greater than a radius ofcurvature of another of the plurality of concave arcs of the thirdpixel; or a radius of curvature of one of the plurality of concave arcsof the third pixel is greater than or equal to a radius of curvature ofone of the plurality of concave arcs of the second pixel.

A display panel includes the above pixel arrangement structure.

Beneficial effects of the present invention: the present inventionprovides a pixel arrangement structure and a display panel includes thepixel arrangement structure. The pixel arrangement structure includes aplurality of first pixel rows and a plurality of second pixel rowsarranged alternately. Each of the first pixel rows comprises a pluralityof first pixels arranged at intervals, and each of the second pixel rowscomprises a plurality of second pixels and a plurality of third pixelsarranged alternately and at intervals. A shape of the first pixelcomprises a shape formed by an arc. Each of the second pixel and thethird pixel comprises a plurality of concave arcs and a plurality ofconvex arcs, the plurality of concave arcs and the plurality of convexarcs of the second pixel are alternately connected and form a closedfigure, and the plurality of concave arcs and the plurality of convexarcs of the third pixel are alternately connected and form a closedfigure. This can prevent color drift from being over a predeterminedrange and effectively increase a pixel aperture ratio.

DESCRIPTION OF DRAWINGS

In order to further understand features and technical content of thepresent invention, refer to the following detailed description anddrawings of the present invention. However, the drawings are providedfor reference and explanation only, and are not intended to limit thepresent invention.

FIG. 1 is a schematic view of a display panel according to a firstembodiment of the present disclosure.

FIG. 2 is a schematic view of a display panel according to a secondembodiment of the present disclosure.

FIG. 3 is a schematic view of a display panel according to a thirdembodiment of the present disclosure.

FIG. 4 is a schematic view of a display panel according to a fourthembodiment of the present disclosure.

FIG. 5A is a schematic view of a shape and a position of a first throughhole in a first mask according to a first embodiment of the presentdisclosure.

FIG. 5B is a schematic view of a shape and a position of a secondthrough hole in a second mask according to a first embodiment of thepresent disclosure.

FIG. 5C is a schematic view of a shape and a position of a third throughhole in a second mask according to a third embodiment of the presentdisclosure.

FIG. 6A is a schematic view of a shape and a position of a first throughhole in a first mask according to a first embodiment of the presentdisclosure.

FIG. 6B is a schematic view of a shape and a position of a secondthrough hole in a second mask according to a first embodiment of thepresent disclosure.

FIG. 6C is a schematic view of a shape and a position of a third throughhole in a second mask according to a third embodiment of the presentdisclosure.

FIG. 7A is a schematic view of a shape and a position of a first throughhole in a first mask according to a first embodiment of the presentdisclosure.

FIG. 7B is a schematic view of a shape and a position of a secondthrough hole in a second mask according to a first embodiment of thepresent disclosure.

FIG. 7C is a schematic view of a shape and a position of a third throughhole in a second mask according to a third embodiment of the presentdisclosure.

FIG. 8A is a schematic view of a shape and a position of a first throughhole in a first mask according to a first embodiment of the presentdisclosure.

FIG. 8B is a schematic view of a shape and a position of a secondthrough hole in a second mask according to a first embodiment of thepresent disclosure.

FIG. 8C is a schematic view of a shape and a position of a third throughhole in a second mask according to a third embodiment of the presentdisclosure.

FIG. 9 is a schematic view of simulation data on a relationship betweena ratio of an aperture ratio of red pixels to an aperture ratio of greenpixels and a ratio of luminous efficiency of the red pixels to luminousefficiency of the green pixels in a display panel according to anembodiment of the present disclosure.

FIG. 10 is a schematic view of simulation data on a relationship betweena ratio of an aperture ratio of blue pixels to an aperture ratio ofgreen pixels and a ratio of luminous efficiency of the blue pixels toluminous efficiency of the green pixels in a display panel according toan embodiment of the present disclosure.

FIG. 11 is a schematic diagram of a pixel arrangement structureaccording to a first embodiment the present invention.

FIG. 12 is a schematic diagram of a pixel arrangement structureaccording to a second embodiment of the present invention.

FIG. 13 is a schematic diagram of a first arrangement of a pixelarrangement structure according to a third embodiment of the presentinvention.

FIG. 14 is a schematic diagram of a second arrangement of the pixelarrangement structure according to the third embodiment of the presentinvention.

FIG. 15 is a schematic diagram comparing the pixel arrangement structureaccording to the first embodiment of the present invention with anexisting embodiment.

FIG. 16 is a schematic diagram comparing the pixel arrangement structureaccording to the first embodiment of the present invention with anotherexisting embodiment.

FIG. 17 is a schematic diagram comparing the pixel arrangement structureaccording to the second embodiment of the present invention with thefirst embodiment.

DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS

The term “edge” as used in this specification means an outer or afurthest point of something. For example, an edge can be a margin, anouter part, or a periphery. In details, in an ellipse, a line thatpasses through two focal points and ends on the ellipse is called a longaxis. The long axis is the longest line that can be obtained byconnecting two points on the ellipse. A line that passes through acenter (a midpoint of a line between two focal points) perpendicular tothe long axis and ends at the ellipse is called a short axis. Asemi-major axis is half of a major axis, that is a line from a centerthrough a focal point to an edge of the ellipse. Similarly, a semi-minoraxis is half of a minor axis.

In order to further elaborate on the technical means and effects adoptedby the present invention, the following will describe in detail withreference to the preferred embodiments and the accompanying drawings ofthe present invention.

The present invention provides a pixel arrangement structure, which ismainly applicable in an organic light emitting diode (OLED) displaypanel to reduce difficulty of manufacturing the OLED display panel andextend lifetime of the OLED display panel.

The term “embodiment” as used in this specification means an embodiment,an example, or an illustration. In addition, the article “a” as used inthe specification and the appended claims may be construed as “one ormore.” The singular form can be clearly defined unless otherwisespecified or from the context.

Any two of a first embodiment, a second embodiment, a third embodiment,and a fourth embodiment of a display panel 100 of the present disclosureare similar or same.

In the first embodiment, the second embodiment, the third embodiment,and the fourth embodiment of the present disclosure, the display panel100 can be, for example, an organic light emitting diode (OLED) panel orthe like.

The display panel includes at least two pixel repeating units, and theat least two pixel repeating units are arranged in an array(one-dimensional array or two-dimensional array). The pixel repeatingunit includes one first pixel 101, one second pixel 102, one third pixel103, and another one of the first pixel 101, the second pixel 102, andthe third pixel 103.

For example, the pixel repeating unit includes one first pixel 101, onesecond pixel 102, and one third pixel 103, as shown in FIG. 3. Or thepixel repeating unit includes two first pixels 101, one second pixel102, one third pixel 103, as shown in FIG. 1 and FIG. 4. Or, the pixelrepeating unit includes one first pixel 101, two second pixels 102, andtwo third pixels 103. Or, the pixel repeating unit includes one firstpixel 101, one second pixel 102, and two third pixels 103 as shown inFIG. 2.

The first pixel 101, the second pixel 102, and the third pixel 103 areones of different red, green, and blue pixels.

The shapes of the first pixel 101, the second pixel 102, and the thirdpixel 103 are formed (connected) by a convex arc and/or a concave arc.

Specifically, a shape of at least one of the first pixel 101, the secondpixel 102, and the shape of at most two of the first pixel 101, thesecond pixel 102, and the third pixel 103 is a shape formed by a convexarc. The shape of the rest of at least two of the first pixel 101, thesecond pixel 102, and the third pixel 103 is a shape formed by a concavearc. Or, the shape of the rest of at least two of the first pixel 101,the second pixel 102, and the third pixel 103 are formed by a convex arcand a concave arc (two ends of a convex arc are respectively connectedto two concave arcs). At least one of the first pixel 101, the secondpixel 102, and the third pixel 103 is circular or elliptical, and atmost two of the first pixel 101, the second pixel 102, and the thirdpixel 103 are circular or elliptical.

Shapes of edges of two of the first pixel 101, the second pixel 102, andthe third pixel 103 are complementary in one of a first direction D1, asecond direction D2, a third direction D3, and a fourth direction D4.The first direction D1 is perpendicular to the second direction D2, thethird direction D3 is a direction having an angle of less than 90degrees with the first direction D1, and the fourth direction D4 isperpendicular to the third direction D3.

The term “complementary” means that two shapes have opposing projectionsand recesses, and when the two shapes are in contact with each other bymoving toward each other, the projections and the recesses of the twoshapes are fitted or contained.

For example, as shown in FIG. 1, the first pixel 101 and the secondpixel 102 respectively have a protrusion and a recess in the thirddirection D3, and the first pixel 101 and the second pixel 102 arecomplementary in the third direction D3. The first pixel 101 and thethird pixel 103 respectively have a protrusion and a recess in thefourth direction D4, and the first pixel 101 and the third pixel 103 arecomplementary in the fourth direction D4.

As shown in FIG. 2, the first pixel 101 and the third pixel 103respectively have a protrusion and a recess in the third direction D3,and the first pixel 101 and the third pixel 103 are complementary in thethird direction D3. The second pixel 102 and the third pixel 103respectively have a protrusion and a recess in the fourth direction D4,and the second pixel 102 and the third pixel 103 are complementary inthe fourth direction D4.

As shown in FIG. 3, the first pixel 101 and second pixel 102respectively have a protrusion and a recess in the third direction D3,and the first pixel 101 and the second pixel 102 are complementary inthe third direction D3. The first pixel 101 and the third pixel 103respectively have a protrusion and a recess in the fourth direction D4,and the first pixel 101 and the third pixel 103 are complementary in thefourth direction D4. The second pixel 102 and the third pixel 103respectively have a protrusion and a recess in the second direction D2,and the second pixel 102 and the third pixel 103 are complementary inthe second direction D2.

As shown in FIG. 4, the first pixel 101 and second pixel 102respectively have a protrusion and a recess in the third direction D3,and the first pixel 101 and the second pixel 102 are complementary inthe third direction D3. The first pixel 101 and the third pixel 103respectively have a protrusion and a recess in the fourth direction D4,and the first pixel 101 and the third pixel 103 are complementary in thefourth direction D4.

At least two of each of the first pixels 101, each of the second pixels102, and each of the third pixels 103 are alternately arranged in atleast one of the first direction D1, the second direction D2, the thirddirection D3, and the fourth direction D4.

Specifically, at least one of the first pixels 101 is located in a rangesurrounded by at least four of the second pixels 102, and at least oneof the first pixels 101 is located in a range surrounded by at leastfour of the third pixels 103. At least one of the second pixels 102 islocated in a range surrounded by at least four of the first pixels 101,and at least one of the second pixels 102 is located in a rangesurrounded by at least four of the third pixels 103. At least one of thethird pixels 103 is located in a range surrounded by at least four ofthe first pixels 101, and at least one of the third pixels 103 islocated in a range surrounded by at least four of the second pixels 102.

As shown in FIG. 1, the second pixel 102 and the third pixel 103 arealternately arranged in the first direction D1 and the second directionD2, and the first pixel 101 and the second pixel 102 are alternatelyarranged in the third direction D3, the first pixel 101 and the thirdpixel 103 are alternately arranged in the fourth direction D4.

As shown in FIG. 2, the second pixel 102 and the third pixel 103 arealternately arranged in the first direction D1 and the second directionD2, and the first pixel 101 and the second pixel 102 are alternatelyarranged in the third direction D3, the first pixel 101 and the thirdpixel 103 are alternately arranged in the fourth direction D4.

As shown in FIG. 3, the first pixel 101, the second pixel 102, and thethird pixel 103 are alternately arranged in the second direction D2, thethird direction D3, and the fourth direction D4. The second pixel 102and the third pixel 103 surround the first pixel 101, and the secondpixel 102 and the third pixel 103 are spaced apart.

As shown in FIG. 4, the second pixel 102 and the third pixel 103 arealternately arranged in the first direction D1 and the second directionD2, the first pixel 101 and the second pixel 102 are alternatelyarranged in the third direction D3, and the first pixel 101 and thethird pixel 103 are alternately arranged in the fourth direction D4.

A first gap is formed between the first pixel 101 and the adjacentsecond pixel 102, a second gap is formed between the second pixel 102and the adjacent third pixel 103, and a third gap is formed between thethird pixel 103 and the adjacent first pixel 101.

At least a portion of the third pixel 103 protrudes toward the firstgap, at least a portion of the first pixel 101 protrudes toward thesecond gap, and at least a portion of the second pixel 102 protrudestoward the third gap.

A width of a gap between two of the first pixel 101, the second pixel102, and the third pixel 103 alternately arranged in the third directionD3 is same as a width of a gap between two of the first pixel 101, thesecond pixel 102, and the third pixel 103 alternately arranged in thefourth direction D4.

As shown in FIG. 1, a width W1 of a gap between the first pixel 101 andthe second pixel 102 in the third direction D3 is equal to a width W2 ofa gap between the first pixel 101 and the third pixel 103 in the fourthdirection D4.

As shown in FIG. 2, a width W3 of a gap between the first pixel 101 andthe third pixel 103 in the third direction D3 is equal to a width W4 ofa gap between the third pixel 103 and the second pixel 102 in the fourthdirection D4.

As shown in FIG. 3, a width W5 of a gap between the first pixel 101 andthe second pixel 103 in the third direction D3 is equal to a width W6 ofa gap between the first pixel 101 and the third pixel 103 in the fourthdirection D4.

As shown in FIG. 4, a width W7 of a gap between the first pixel 101 andthe second pixel 102 in the third direction D3 is equal to a width W8 ofa gap between the first pixel 101 and the third pixel 103 in the fourthdirection D4.

The shape of the first pixel 101 is circular or elliptical. The shape ofthe second pixel 102 is one of shapes formed by a convex arc and/or aconcave arc. The shape of the third pixel 103 is a shape formed by aconcave arc or a combination of a concave arc and a convex arc. Thecircular or elliptical shape is one of the shapes formed by the convexarc. It is understood that, the shape formed by the convex arc mayinclude other shapes.

The shape formed by the convex arc and/or the concave arc includes: ashape composed of a convex arc, a shape composed of four-segment concavearc, a shape composed of six-segment concave arc, a shape composed ofone-segment convex arc and five-segment concave arc, a shape composed ofeight-segment concave arc, a shape composed of four-segment convex arcand four-segment concave arc, a shape composed of six-segment convex arcand six-segment concave arc, a shape composed of seven-segment convexarc and five-segment concave arc, and a shape composed of eight-segmentconvex arc and eight-segment concave arc.

In the shape composed of four-segment concave arc, the four-segmentconcave arc is connected end to end.

In the shape composed of six-segment concave arc, the six-segmentconcave arc is connected end to end.

In the shape composed of one-segment convex arc and five-segment concavearc, the one-segment convex arc and the five-segment concave arcconnected end to end.

In the shape composed of eight-segment concave arc, the eight-segmentconcave arc is connected end to end.

In the shape composed of four-segment convex arc and four-segmentconcave arc, two ends of the convex arc are respectively connected totwo adjacent concave arcs, and two ends of the concave arc arerespectively connected to two adjacent convex arcs.

In the shape composed of six-segment convex arc and six-segment concavearc, two ends of the convex arc are respectively connected to twoadjacent concave arcs, and two ends of the concave arc are respectivelyconnected to two adjacent convex arcs.

In the shape composed of seven-segment convex arc and five-segmentconcave arc, the seven-segment convex arc and the five-segment concavearc are connected end to end. The seven-segment convex arc and thefive-segment concave arc are connected together at intervals.

In the shape composed of eight-segment convex arc and eight-segmentconcave arc, two ends of the convex arc are respectively connected totwo adjacent concave arcs, and two ends of the concave arc arerespectively connected to two adjacent convex arcs.

As shown in FIG. 1, the shape of the first pixel 101 is circular orelliptical, and the shapes of the second pixel 102 and the third pixel103 are the shapes composed of four-segment convex arc and four-segmentconcave arc.

As shown in FIG. 2, the shape of the first pixel 101 is circular orelliptical, the shape of the second pixel 102 is circular or elliptical,and the shape of the third pixel 103 is the shape composed offour-segment convex arc and four-segment concave arc.

As shown in FIG. 3, the shape of the first pixel 101 is circular orelliptical, the shape of the second pixel 102 is the shape composed ofsix-segment convex arc and six-segment concave arc, and the shape of thethird pixel 103 is the shape composed of seven-segment convex arc andfive-segment concave arc.

As shown in FIG. 4, the shape of the first pixel 101 is circular orelliptical, the shape of the second pixel 102 is the shape composed ofeight-segment convex arc and eight-segment concave arc, and the shape ofthe third pixel 103 is the shape composed of four-segment convex arc andfour-segment concave arc.

The shape composed of a convex arc, the shape composed of four-segmentconcave arc, the shape composed of six-segment concave arc, the shapecomposed of eight-segment concave arc, the shape composed offour-segment convex arc and four-segment concave arc, the shape composedof six-segment convex arc and six-segment concave arc, and the shapecomposed of eight-segment convex arc and eight-segment concave arc arecentrally symmetrical.

Shapes, sizes, and areas of any two of the first pixel 101, the secondpixel 102, and the third pixel 103 are different.

In the above technical solution, the shapes of the first pixel, thesecond pixel, and the third pixel are shapes formed by a convex arcand/or a concave arc, and shapes of the edges of two of the first pixel,the second pixel and the third pixel are complementary, and therefore,unused space between the pixels in the display panel of the embodimentof the present disclosure can be effectively reduced (improved), and theembodiment of the present disclosure can effectively increase anaperture ratio of a pixel.

In a case where the shape of the first pixel 101 is circular orelliptical, a shape of an edge of one of each of the second pixels 102and each of the third pixels 103 in the third direction D3 and thefourth direction D4 corresponds to a concave arc, a sum of a radius ofcurvature of a shape of an edge of each of the first pixels 101 facingone of each of the second pixels 102 and each of the third pixels 103and a width of a predetermined gap is equal to a radius of curvature ofthe concave arc corresponding to the edge of one of each of the secondpixels 102 and each of the third pixels 103 in the third direction D3and the fourth direction D4.

The predetermined gap is a gap between an edge of one of each of thesecond pixels 102 and each of the third pixels 103 and an edge of eachadjacent first pixel 101 in one of the third direction D3 and the fourthdirection D4. A width of the predetermined gap in the third direction D3is equal to a width of the predetermined gap in the fourth direction D4.

As shown in FIG. 1, the first pixel 101 has an elliptical shape, and amajor axis of the ellipse is parallel to the third direction D3, and aminor axis of the ellipse is parallel to the fourth direction D4. In thethird direction D3, the shape of an edge of the second pixel 102 towardthe first pixel 101 comprises a concave arc. A radius of curvature ofthe concave arc of the edge of the second pixel 102 toward the firstpixel 101 is equal to a sum of a long axis of the first pixel 101 and awidth W1 of the gap between the first pixel 101 and the second pixel 102in the third direction D3. In the fourth direction D4, the shape of anedge of the third pixel 103 toward the first pixel 101 comprises aconcave arc. A radius of curvature of the concave arc of the edge of thethird pixel 103 toward the first pixel 101 is equal to a sum of a longaxis of the first pixel 101 and a width W2 of the gap between the firstpixel 101 and the third pixel 103 in the fourth direction D4.

As shown in FIG. 2, the shape of the first pixel 101 is circular. In thethird direction D3, the shape of an edge of the third pixel 103 towardthe first pixel 101 comprises to a concave arc. A radius of curvature ofthe concave of the edge of the first pixel 101 toward the third pixel103 is equal to a sum of a radius of the first pixel 101 and a width W3of the gap between the first pixel 101 and the third pixel 103 in thethird direction D3. In the fourth direction D4, the shape of an edge ofthe third pixel 103 toward the first pixel 101 comprises a concave arc.A radius of curvature of the concave arc of the edge of the third pixel103 toward the first pixel 101 is equal to a width W3 of the gap betweenthe first pixel 101 and the third pixel 103 in the fourth direction D4.

As shown in FIG. 3, the shape of the first pixel 101 is elliptical, themajor axis of the ellipse is parallel to the first direction D1, and theminor axis of the ellipse is parallel to the second direction D2. In thethird direction D3, the shape of an edge of the second pixel 102 towardthe first pixel 101 comprises a concave arc. A radius of curvature ofthe concave arc of the edge of the second pixel 102 toward the firstpixel 101 is equal to a sum of a radius of curvature of the concave arcof to the edge of the second pixel 102 toward the first pixel 101 and awidth W5 of the gap between the first pixel 101 and the second pixel 102in the third direction D3. In the fourth direction D4, the shape of anedge of the third pixel 103 toward the first pixel 101 comprises aconcave arc. A radius of curvature of the concave arc of the edge of thethird pixel 103 toward the first pixel 101 is equal to a sum of a radiusof curvature of the concave arc of the edge of the third pixel 103toward the first pixel 101 and a width W6 of the gap between the firstpixel 101 and the third pixel 103 in the fourth direction D4.

As shown in FIG. 4, the shape of the first pixel 101 is circular. In thethird direction D3, the shape of an edge of the second pixel 102 towardthe first pixel 101 comprises a concave arc. A radius of curvature ofthe concave arc of the edge of the second pixel 102 toward the secondpixel 102 is equal to a sum of a radius of curvature of the concave arcof the edge of the second pixel 102 toward the first pixel 101 and awidth W7 of the gap between the first pixel 101 and the second pixel 102in the third direction D3. In the fourth direction D4, the shape of anedge of the third pixel 103 toward the first pixel 101 comprises aconcave arc. A radius of curvature of the concave arc of the edge of thethird pixel 103 toward the first pixel 101 is equal to a sum of a radiusof curvature of the concave arc of the edge of the third pixel 103toward the first pixel 101 and a width W8 of the gap between the firstpixel 101 and the third pixel 103 in the fourth direction D4.

An arc and an extended arc thereof corresponding to an edge of thirdpixel 103 facing the first pixel 101 and an arc and an extended arcthereof corresponding to an edge of the second pixel 102 facing thefirst pixel 101 form a predetermined shape, and the predetermined shapeincludes a circle or an ellipse.

As shown in FIG. 1, the predetermined shape is an elliptical shape. Asshown in FIG. 2, the predetermined shape is a circular shape. As shownin FIG. 3, the predetermined shape is an elliptical shape. As shown inFIG. 4, the predetermined shape is a circle.

A shape of each of the first pixels 101 is the same as or similar to thepredetermined shape.

A center of a shape of each of the first pixels 101 is the same as acenter of the predetermined shape.

When the shape of each of the first pixels 101 includes an ellipse, along axis of the ellipse points to one of each of the second pixels 102and each of the third pixels 103, a short axis of the ellipse points tothe other of each of the second pixels 102 and each of the third pixels103.

As shown in FIG. 1, the long axis of the ellipse corresponding to theshape of the first pixel 101 is directed to the second pixel 102, andcorrespondingly, the short axis is directed to the third pixel 103.

As shown in FIG. 3, the short axis of the ellipse corresponding to theshape of the first pixel 101 is directed to the second pixel 102 and thethird pixel 103.

An angle between the long axis of the ellipse and the first direction orthe second direction ranges between 0 degree and 90 degrees.

As shown in FIG. 1, the angle between the long axis of the ellipse andthe first direction D1 is in the range of 40 to 50 degrees. As shown inFIG. 3, the angle between the long axis of the ellipse and the firstdirection D1 is in a range of 0 to 10 degrees. Correspondingly, theangle between the long axis of the ellipse and the second direction D2is in the range of 80 degrees to 90 degrees.

When a shape of each of the second pixels 102 includes a circle or anellipse, and a shape of each of the third pixels 103 includes a concavearc or a combined shape of a concave arc and a convex arc, the shape ofeach of the third pixels 103 includes a curvature of one of at leastfour concave arcs that is greater or less than (adjacent) another of theat least four concave arcs.

As shown in FIG. 2, the second pixel 102 has a circular shape, and aradius of curvature of the concave arc corresponding to the edge of thesecond pixel 102 that the third pixel 103 faces is greater than a radiusof curvature of the concave arc corresponding to the edge of the firstpixel 101 that the third pixel 103 faces.

When a shape of each of the second pixels 102 and a shape of each of thethird pixels 103 both include a concave arc or a combined shape of aconcave arc and a convex arc, a curvature of one of at least fourconcave arcs of the shape of each of the third pixels 103 is greater orequal to a curvature of one of at least four concave arcs of the shapeof each of the second pixels 102.

As shown in FIG. 1, a radius of curvature of the concave arccorresponding to the edge of the first pixel 101 that the second pixel102 faces is greater than a radius of curvature of the concave arccorresponding to the edge of the first pixel 101 that the third pixel103 faces.

As shown in FIG. 3, a radius of curvature of the convex arccorresponding to the edge of the second pixel 102 that the third pixel102 faces is greater than a radius of curvature of the convex arccorresponding to the edge of the first pixel 101 that the third pixel103 faces. A radius of curvature of the convex arc corresponding to theedge of the first pixel 101 that the third pixel 102 faces is equal to aradius of curvature of the convex arc corresponding to the edge of thefirst pixel 101 that the second pixel 102 faces.

As shown in FIG. 4, a radius of curvature of the convex arccorresponding to the edge of the first pixel 101 that the third pixel102 faces is equal to a radius of curvature of the convex arccorresponding to the edge of the first pixel 101 that the second pixel102 faces.

In the above technical solution, since the shape of the first pixel iscircular or elliptical, and the shapes of the edges in the second pixeland the third pixel correspond to a concave arc, the sum of the radiusof curvature of the shape of the edge of the first pixel and the widthof the predetermined gap is equal to the radius of curvature of theconcave arc corresponding to the edge of one of the second pixel and thethird pixel, and thus, the embodiment of the present disclosure caneffectively reduce the unused space between pixels, thereby effectivelyincreasing the aperture ratio of the pixel.

In the above technical solution, since the shape of the first pixel is acircle or an ellipse, the shape of the second pixel is a circle, anellipse, and a shape formed by a concave arc and a convex arc. In onecase, the shape of the third pixel is a shape formed by a concave arcand a convex arc, thereby facilitating the fabrication of the pixel andeffectively increasing the aperture ratio of the pixel.

A total area of all of the first pixels 101 (for example, an area of oneof the first pixels 101, a sum of areas of the two first pixels 101),all of the total area of the two pixels 102 (for example, an area of oneof the second pixels 102, a sum of areas of the two second pixels 102),the total area of all of the third pixels 103 (for example, an area ofone of the third pixels 103, a sum of areas of the two third pixels 103)in the pixel repeating unit are inversely proportional to the luminousefficiency of the luminescent material of the first pixel 101, theluminous efficiency of the luminescent material of the second pixel 102,and the luminous efficiency of the luminescent material of the thirdpixel 103, respectively.

A ratio y1 of an aperture ratio of the red pixel to an aperture ratio ofthe green pixel is in the range of 0.78e{circumflex over( )}(−1.98r)≤y1≤2.297e{circumflex over ( )}(−1.85r), and 0.1≤y1≤3, wherer is a ratio of a luminous efficiency of the red pixel to a luminousefficiency of the green pixel, a ratio y2 of an aperture ratio of theblue pixel to the aperture ratio of the green pixel is in a range of1.32e{circumflex over ( )}(−10.7b)≤y2≤5.95e{circumflex over( )}(−14.1b), and 0.3≤y2≤4, where b is a ratio of a luminous efficiencyof the blue pixel to the luminous efficiency of the green pixel.

The ratio y1 of the aperture ratio of the red pixel to the apertureratio of the green pixel may be, for example, one of 0.1, 0.2, 0.3, 0.4,0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.1, 1.2, 1.3, 1.4, 1.5 1.6, 1.7, 1.8, 1.9,2, 2.1, 2.2, 2.3, 2.4, 2.5, 2.6, 2.7, 2.8, 2.9, and 3. Preferably, theratio y1 of the aperture ratio of the red pixel to the aperture ratio ofthe green pixel is in a range of 0.2≤y1≤2.2. The ratio y2 of theaperture ratio of the blue pixel to the aperture ratio of the greenpixel may be, for example, one of 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1,1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2, 2.1, 2.2, 2.3, 2.4, 2.5,2.6, 2.7, 2.8, 2.9, 3, 3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8, 3.9, and4. Preferably, the ratio y2 of the aperture ratio of the blue pixel tothe aperture ratio of the green pixel is in the range of 0.5≤y2≤3.6. Asshown in FIG. 9 and FIG. 10, in this range, the current densities ofvarious material efficiencies acting on red, green, and blue pixels areequal or substantially equal, while in long-term use, the degree ofmaterial attenuation of red, green, and blue pixels are similar, so thatthe overall color shift of the display panel can fall within arelatively good range.

The aperture ratio and the luminous efficiency of the red pixel, thegreen pixel, and the blue pixel in the conventional display panel do nothave the above relationship (i.e., there is no: 0.78e{circumflex over( )}(−1.98r)≤y1≤2.297e{circumflex over ( )}(−1.85r), and 0.1≤y1≤3,1.32e{circumflex over ( )}(−10.7b)≤y2≤5.95e{circumflex over( )}(−14.1b), and 0.3≤y2≤4), therefore, with the accumulation of usetime, in the conventional display panel, the difference in the degree ofattenuation of the efficacy of any one of the red pixel, the greenpixel, and the blue pixel will become larger and larger, resulting inthe degree of color shift (value) of the conventional display panelgradually going to a predetermined range (about the numerical range ofthe display effect) is divergent (i.e., deviated), that is, the displayperformance of the conventional display panel is getting worse.

In the display panel of the embodiment of the present disclosure, since0.78e{circumflex over ( )}(−1.98r)≤y1≤2.297e{circumflex over( )}(−1.85r), and 0.1≤y1≤3, 1.32e{circumflex over( )}(−10.7b)≤y2≤5.95e{circumflex over ( )}(−14.1b), and 0.3≤y2≤4,therefore, In the case of the same usage time as a conventional displaypanel, the difference in the degree of attenuation of the light effectof any two of the red pixel, the green pixel, and the blue pixel in thedisplay panel of the embodiment of the present disclosure is not muchdifferent, and the degree of color shift (value) of the display panelthe embodiment of the present disclosure is still within a predeterminedrange, so that the display panel of the embodiment of the presentdisclosure maintains a better display performance for a longer durationthan the conventional one. The display panel maintains the same displayfor a longer duration.

In the case where the pixel repeating unit includes one first pixel 101,one second pixel 102, and one third pixel 103, the aperture ratio of thefirst pixel 101 is equal to the area of the first pixel 101/the area ofthe pixel repeating unit, the aperture ratio of the second pixel 102 isequal to the area of the second pixel 102/the area of the pixelrepeating unit, the aperture ratio of the third pixel 103 is equal tothe area of the third pixel 103/the area of the pixel repeating unit.

In the case where the pixel repeating unit includes two first pixel 101,one second pixel 102, and one third pixel 103, the aperture ratio of thefirst pixels 101 is equal to the area of the two first pixels 101/thearea of the pixel repeating unit, the aperture ratio of the second pixel102 is equal to the area of the second pixel 102/the area of the pixelrepeating unit, the aperture ratio of the third pixel 103 is equal tothe area of the third pixel 103/the area of the pixel repeating unit.

In the case where the pixel repeating unit includes one first pixel 101,two second pixels 102, and one third pixel 103, the aperture ratio ofthe first pixel 101 is equal to the area of the first pixel 101/the areaof the pixel repeating unit, the aperture ratio of the second pixels 102is equal to the area of the two second pixels 102/the area of the pixelrepeating unit, the aperture ratio of the third pixel 103 is equal tothe area of the third pixel 103/the area of the pixel repeating unit.

In the case where the pixel repeating unit includes one first pixel 101,one second pixel 102, and two third pixels 103, the aperture ratio ofthe first pixel 101 is equal to the area of the first pixel 101/the areaof the pixel repeating unit, the aperture ratio of the second pixel 102is equal to the area of the second pixel 102/the area of the pixelrepeating unit, the aperture ratio of the third pixels 103 is equal tothe area of the two third pixels 103/the area of the pixel repeatingunit.

In a case where the shape of the first pixel 101 is elliptical, the areaof the first pixel 101 corresponds to the length of the long axis of thefirst pixel 101 and the length of the minor axis. In a case where theshape of the first pixel 101 is a circle, an area of the first pixel 101corresponds to a length of a radius of the first pixel 101.

In the case where the shape of the second pixel 102 is a shape includinga convex arc and/or a concave arc, the area of the second pixel 102=thearea of the smallest circumcircle of the second pixel 102—a firstoverlap area of the pixel gap area and the second pixel 102; wherein thepixel gap area includes one of a first gap region between the firstpixel 101 and the second pixel 102 and a second gap region between thesecond pixel 102 and the third pixel 103.

The first overlapping area corresponds to a distance between the firstpixel 101 and the second pixel 102, a width of the first gap region, acurvature of an outer peripheral edge line of the first gap region, andalso corresponds to a distance between the third pixel 103 and thesecond pixel 102, the width of the second gap region, and the curvatureof an outer peripheral edge line of the second gap region.

In a case where the shape of the third pixel 103 is a shape including aconcave arc or a combination of a concave arc and a convex arc, the areaof the third pixel 103 is equal to the area of the minimum circumscribedcircle of the third pixel 103 minus the second overlapping area of thepixel gap area pair and the third pixel 103. The pixel gap regionincludes at least one of a third gap region between the third pixel 103and the first pixel 101 and a second gap region between the second pixel102 and the third pixel 103.

The second overlapping area corresponds to a distance between the firstpixel 101 and the third pixel 103, a width of the third gap region, acurvature of an outer peripheral edge line of the third gap region, andalso corresponds to a distance between the third pixel 103 and thesecond pixel 102, the width of the second gap region, and the curvatureof an outer peripheral edge line of the second gap region.

In particular, the shape of the first pixel 101 is elliptical, and theshape of the second pixel 102 and the shape of the third pixel 103 areboth formed by convex arcs and/or concave arcs. The area of the firstpixel 101, the area of the second pixel 102, and the area of the thirdpixel 103 are different, the shape of the second pixel 102 and the shapeof the third pixel 103 are different, and the size of the second pixel102 is different from the size of the third pixel 103.

In the case where the shape of the first pixel 101 is elliptical, theratio of the major axis to the minor axis of the ellipse is in the rangeof 1 to 5, for example, the ratio is one of 1, 1.3, 1.6, 1.8, 2, 2.3,2.5, 2.8, 3, 3.3, 3.5, 3.8, 4, 4.3, 4.5, 4.8, and 5. Preferably, theratio of the major axis to the minor axis of the ellipse is in the rangeof 1 to 3.

Since the aperture ratios (areas) of the red pixel, the green pixel, andthe blue pixel are set according to the luminous efficiency thereof, thecurrent density acting on the different pixels is equal, therebypreventing the display panel from being displayed after the image isdisplayed (lighting) for a long time. The degree of color shift is outof a predetermined range (that is, the degree of color shift of thedisplay panel is maintained within a predetermined range).

The shape of the at least one of the first pixel 101, the second pixel102, and the third pixel 103 is a shape formed by a convex arc. Theremaining at least two of the first pixel 101, the second pixel 102, andthe third pixel 103 are formed by a convex arc and a concave arc. Two ofthe shapes of the edges of the first pixel 101, the second pixel 102,and the third pixel 103 are complementary in one of the first directionD1, the second direction D2, the third direction D3, and the fourthdirection D4. Therefore, between two of the first pixel 101, the secondpixel 102, and the third pixel 103, there must be a gap of aconsiderable width to prevent interference between the two pixels. Thetechnical solution can make full use of the space of the display panel100, reducing the excess space, so that the aperture ratios of the firstpixel 101, the second pixel 102, and the third pixel 103 are improved.

The sum of the radius of curvature of the shape of the edge of the firstpixel 101 toward one of the second pixel 102 and the third pixel 103 andthe width of the predetermined gap is equal to the radius of curvatureof the concave arc. Therefore, the aperture ratios of the first pixel101, the second pixel 102, and the third pixel 103 can be effectivelyimproved.

Since the two concave arcs in the shape formed by the convex arc and/orthe concave arc are connected by the convex arc, it is convenient tomanufacture in the corresponding mask (reducing the difficulty of makingthe mask). In addition, it is advantageous to increase the apertureratios of the first pixel 101, the second pixel 102, and the third pixel103.

In the above technical solution, the area of the first pixel, the areaof the second pixel, the area of the third pixel are respectivelyinversely proportional to the luminous efficiency of the luminescentmaterial of the first pixel, the luminous efficiency of the luminescentmaterial of the second pixel, and the luminous efficiency of theluminescent material of the third pixel, so that the embodiment of thepresent disclosure can avoid issues of color shift of the display panel.

Any two of the first embodiment, the second embodiment, the thirdembodiment, and the fourth embodiment of the mask (a mask including athrough hole having a first shape, a mask including a through holehaving a second shape, and a through hole having a third shape) of thepresent disclosure are same or similar.

The mask of the embodiment of the present disclosure is used to form apixel (including the first pixel 101, the second pixel 102, and thethird pixel 103). Specifically, the mask is used to form an anode layerof a pixel on an array element plate of the display panel 100 and/orform a layer of luminescent material on the pixel defining layer of thedisplay panel 100 by an evaporation process. The array element plateincludes a substrate, a thin film transistor switch, an insulatinglayer, and the like, and the pixel defining layer is disposed on thearray element plate.

A through hole is disposed in the mask. At least two of the throughholes are along at least two of the first direction D1, the seconddirection D2, the third direction D3, and the fourth direction D4 andare arranged in an array. The first direction D1 is perpendicular to thesecond direction D2, and the third direction D3 is a direction having anangle of less than 90 degrees with the first direction D1, and thefourth direction D4 is perpendicular to the third direction D3.

The shape of the through hole is a shape formed by a convex arc and/or aconcave arc. That is, the shape of the through hole corresponds to theshape of the pixel (including the first pixel 101, the second pixel 102,and the third pixel 103).

The through holes of different shapes are respectively disposed ondifferent masks, for example, three different shapes of through holesare respectively disposed on three different masks. Alternatively, thethrough holes of different shapes are all disposed in the same mask, forexample, three different shapes of through holes are all disposed in thesame mask. The three different shapes include a first shape, a secondshape, and a third shape.

The shape formed by the convex arc and/or the concave arc includes: ashape composed of four-segment concave arc (including a circle, anellipse, etc.), a shape composed of six-segment concave arc, a shapecomposed of one-segment convex arc and five-segment concave arc, a shapecomposed of eight-segment concave arc, a shape composed of four-segmentconvex arc and four-segment concave arc, a shape composed of six-segmentconvex arc and six-segment concave arc, a shape composed ofseven-segment convex arc and five-segment concave arc, and a shapecomposed of eight-segment convex arc and eight-segment concave arc.

A first projection of the through hole having the first shape (the firstthrough hole 201) in a predetermined coordinate system XOY and a secondprojection of the through hole having the second shape (the secondthrough hole 301) in the predetermined coordinate system are staggeredin any one of the first direction D1, the second direction D2, the thirddirection D3, and the fourth direction D4.

The first projection of the through hole having the first shape (thefirst through hole 201) in the predetermined coordinate system and athird projection of the through hole having the third shape (the thirdthrough hole 401) in the predetermined coordinate system are staggeredin any one of the first direction D1, the second direction D2, the thirddirection D3, and the fourth direction D4.

A second projection of the through hole having the second shape (thesecond through hole 301) in the predetermined coordinate system and thethird projection of the through hole having the third shape (the thirdthrough hole 401) in the predetermined coordinate system are staggeredin any one of the first direction D1, the second direction D2, the thirddirection D3, and the fourth direction D4.

Shapes of opposite edges of adjacent two of the first projection, thesecond projection, and the third projection are complementary in one ofthe first direction D1, the second direction D2, the third direction D3,and the fourth direction D4.

Two number axes of the predetermined coordinate system are parallel tothe first direction D1 and the second direction D2, respectively.

The shape of any one of the first projection, the second projection, andthe third projection is a shape formed by a convex arc and/or a concavearc.

The shape of at least one of the first projection, the secondprojection, and the third projection is a shape formed by a convex arc,the shape of at most two of the first projection, the second projection,and the third projection is a shape formed by a convex arc, and theshapes of the remaining at least two of the first projection, the secondprojection, and the third projection are a shape formed by a concavearc, or the shapes of the remaining at least two of the firstprojection, the second projection, and the third projection are formedby a convex arc and a concave arc (a convex arc connecting the twoconcave arcs).

At least two of the first projection, the second projection, and thethird projection are alternately arranged in at least one of the firstdirection D1, the second direction D2, the third direction D3, and thefourth direction D4.

Specifically, a first projection array composed of at least two of thefirst projections, a second projection array composed of at least two ofthe second projections, and a third projection array composed of atleast two of the third projections are embedded in each other. At leastone of the first projections is located in a range surrounded by atleast four of the second projections, at least one of the firstprojections is located in a range surrounded by at least four of thethird projections, at least one of the second projections is located ina range surrounded by at least four of the first projections, at leastone of the second projections is located in a range surrounded by atleast four of the third projections, at least one of the thirdprojections is located in a range surrounded by at least four of thefirst projections, and at least one of the third projections is locatedin a range surrounded by at least four of the second projections.

A first gap is disposed between the first projection and the adjacentsecond projection, a second gap is disposed between the secondprojection and the adjacent third projection, and a third gap isdisposed between the third projection and the adjacent first projection.

At least a portion of the third projection is convex toward the firstgap, at least a portion of the first projection is convex toward thesecond gap, and at least a portion of the second projection is convextoward the third gap.

The width of the gap between two of the first projection, the secondprojection, and the third projection alternately arranged in the thirddirection D3 is equal to the width of the gap between two of the firstprojection, the second projection, and the third projection alternatelyarranged in the fourth direction D4.

The shape of the first through hole 201 is circular or elliptical, andthe shape of the second through hole 301 is one of circular, elliptical,and a shape formed by a convex arc and/or a concave arc. The shape ofthe third through hole 401 is a shape formed by concave arc or acombination of a concave arc and a convex arc. The circular orelliptical shape is one of the shapes formed by the convex arcs. Ofcourse, the shape formed by the convex arcs may further include othershapes.

The shape formed by the convex arc and/or the concave arc includes: ashape composed of a convex arc, a shape composed of four-segment concavearc, a shape composed of six-segment concave arc, a shape composed ofone-segment convex arc and five-segment concave arc, a shape composed ofeight-segment concave arc, a shape composed of four-segment convex arcand four-segment concave arc, a shape composed of six-segment convex arcand six-segment concave arc, a shape composed of seven-segment convexarc and five-segment concave arc, and a shape composed of eight-segmentconvex arc and eight-segment concave arc.

In the shape composed of four-segment concave arc, the four-segmentconcave arc is connected end to end.

In the shape composed of six-segment concave arc, the six-segmentconcave arc is connected end to end.

In the shape composed of one-segment convex arc and five-segment concavearc, the one-segment convex arc and the five-segment concave arcconnected end to end.

In the shape composed of eight-segment concave arc, the eight-segmentconcave arc is connected end to end.

In the shape composed of four-segment convex arc and four-segmentconcave arc, two ends of the convex arc are respectively connected totwo adjacent concave arcs, and two ends of the concave arc arerespectively connected to two adjacent convex arcs.

In the shape composed of six-segment convex arc and six-segment concavearc, two ends of the convex arc are respectively connected to twoadjacent concave arcs, and two ends of the concave arc are respectivelyconnected to two adjacent convex arcs.

In the shape composed of seven-segment convex arc and five-segmentconcave arc, the seven-segment convex arc and the five-segment concavearc are connected end to end. The seven-segment convex arc and thefive-segment concave arc are connected together at intervals.

In the shape composed of eight-segment convex arc and eight-segmentconcave arc, two ends of the convex arc are respectively connected totwo adjacent concave arcs, and two ends of the concave arc arerespectively connected to two adjacent convex arcs.

As shown in FIG. 5A, FIG. 5B, and FIG. 5C, the shape of the firstthrough hole 201 is circular or elliptical, and the shapes of the secondthrough hole 301 and the third through hole 401 are both a shapecomposed of four-segment convex arc and four-segment concave arc.

As shown in FIG. 6A, FIG. 6B, and FIG. 6C, the shape of the firstthrough hole 201 is circular or elliptical, the shape of the secondthrough hole 301 is circular or elliptical, and the third through hole401 is a shape composed of four-segment convex arc and four-segmentconcave arc.

As shown in FIG. 7A, FIG. 7B, and FIG. 7C, the shape of the firstthrough hole 201 is circular or elliptical, the second through hole 301is a shape composed of six-segment convex arc and six-segment concavearc, and the third through hole 401 is a shape composed of seven-segmentconvex arc and five-segment concave arc.

As shown in FIG. 8A, FIG. 8B, and FIG. 8C, the shape of the firstthrough hole 201 is circular or elliptical, the second through hole 301is a shape composed of eight-segment convex arc and eight-segmentconcave arc, and the third through hole 401 is a shape composed offour-segment convex arc and four-segment concave arc.

The shape composed of a convex arc, the shape composed of four-segmentconcave arc, the shape composed of six-segment concave arc, the shapecomposed of eight-segment concave arc, the shape composed offour-segment convex arc and four-segment concave arc, the shape composedof six-segment convex arc and six-segment concave arc, and the shapecomposed of eight-segment convex arc and eight-segment concave arc arecentrally symmetrical.

Shapes, sizes, and areas of any two of the first projection, the secondprojection, and the third projection are different.

The shape of the edge of one of the second projection and the thirdprojection in the third direction D3 or the fourth direction D4corresponds to a concave arc.

A sum of a radius of curvature of a shape of an edge of one of the firstprojection, the second projection, and the third projection and a widthof a predetermined gap is equal to a radius of curvature of the concavearc corresponding to the edge of one of the first projection, the secondprojection, and the third projection in the third direction D3 and thefourth direction D4.

The predetermined gap is a gap between an edge of one of the firstprojection, the second projection, and the third projection and an edgeof the adjacent the first projection in one of the third direction D3and the fourth direction D4. A width of the predetermined gap in thethird direction D3 is equal to a width of the predetermined gap in thefourth direction D4.

An arc and an extended arc thereof corresponding to an edge of the thirdprojection facing the first projection and an arc and an extended arcthereof corresponding to an edge of the second projection facing thefirst projection form a predetermined shape, and the predetermined shapeincludes a circle or an ellipse.

A shape of each of the first projection is the same as or similar to thepredetermined shape.

A center of a shape of each of the first projection is the same as acenter of the predetermined shape.

When the shape of the first projection includes an ellipse, a long axisof the ellipse points to one of the second projection and the thirdprojection, a short axis of the ellipse points to the other of thesecond projection and the third projection.

An angle between the long axis of the ellipse and the first direction D1or the second direction D2 ranges between 0 degree and 90 degrees.

When a shape of the second projection includes a circle or an ellipse,and a shape of the third projection includes a concave arc or a combinedshape of a concave arc and a convex arc, the shape of the thirdprojection includes a curvature of one of at least four concave arcsthat is greater or less than another of the at least four concave arcs.

When a shape of the second projection and a shape of the thirdprojection both include a concave arc or a combined shape of a concavearc and a convex arc, a curvature of one of at least four concave arcsof the shape of the third projection is greater or equal to a curvatureof one of at least four concave arcs of the shape of the secondprojection.

Any two of the first embodiment, the second embodiment, the thirdembodiment, and the fourth embodiment of the mask assembly of theembodiment of the present disclosure are same or similar.

The mask assembly of the embodiment of the present disclosure includesthree masks in which a through hole is provided.

At least two of the through holes are arranged in an array in at leasttwo directions of the first direction D1, the second direction D2, thethird direction D3, and the fourth direction D4. The first direction D1is perpendicular to the second direction D2, and the third direction D3is a direction having an angle of less than 90 degrees with the firstdirection D1, and the fourth direction D4 is perpendicular to the thirddirection D3.

The shape of the through hole is a shape formed by a convex arc and/or aconcave arc.

The three masks are the first mask 200, the second mask 300, and thethird mask 400, respectively. The through hole of the first mask 200 isthe first through hole 201, the through hole of the second mask 300 isthe second through hole 301, and the through hole of the third mask 400is the third through hole 401.

A first projection of the first through hole 201 in a predeterminedcoordinate system and a second projection of the second through hole 301in the predetermined coordinate system are staggered in any one of thefirst direction D1, the second direction D2, the third direction D3, andthe fourth direction D4.

The first projection of the first through hole 201 in the predeterminedcoordinate system and a third projection of the third through hole 401in the predetermined coordinate system are staggered in any one of thefirst direction D1, the second direction D2, the third direction D3, andthe fourth direction D4.

A second projection of the second through hole 301 in the predeterminedcoordinate system and the third projection of the third through hole 401in the predetermined coordinate system are staggered in any one of thefirst direction D1, the second direction D2, the third direction D3, andthe fourth direction D4.

Two number axes of the predetermined coordinate system are parallel tothe first direction D1 and the second direction D2, respectively.

The shape of any one of the first projection, the second projection, andthe third projection is a shape formed by a convex arc and/or a concavearc.

The shape of at least one of the first projection, the secondprojection, and the third projection is a shape formed by a convex arc,the shape of at most two of the first projection, the second projection,and the third projection is a shape formed by a convex arc, and theshapes of the remaining at least two of the first projection, the secondprojection, and the third projection are a shape formed by a concavearc, or the shapes of the remaining at least two of the firstprojection, the second projection, and the third projection are formedby a convex arc and a concave arc (a convex arc connecting the twoconcave arcs).

Shapes of edges of two of the first projection, the second projection,and the third projection are complementary in one of the firstdirection, the second direction, the three direction, and the fourthdirection.

At least two of the first projection, the second projection, and thethird projection are alternately arranged in at least one of the firstdirection D1, the second direction D2, the third direction D3, and thefourth direction D4.

Specifically, a first projection array composed of at least two of thefirst projections, a second projection array composed of at least two ofthe second projections, and a third projection array composed of atleast two of the third projections are embedded in each other. At leastone of the first projections is located in a range surrounded by atleast four of the second projections, at least one of the firstprojections is located in a range surrounded by at least four of thethird projections, at least one of the second projections is located ina range surrounded by at least four of the first projections, at leastone of the second projections is located in a range surrounded by atleast four of the third projections, at least one of the thirdprojections is located in a range surrounded by at least four of thefirst projections, and at least one of the third projections is locatedin a range surrounded by at least four of the second projections.

A first gap is disposed between the first projection and the adjacentsecond projection, a second gap is disposed between the secondprojection and the adjacent third projection, and a third gap isdisposed between the third projection and the adjacent first projection.

At least a portion of the third projection is convex toward the firstgap, at least a portion of the first projection is convex toward thesecond gap, and at least a portion of the second projection is convextoward the third gap.

The width of the gap between two of the first projection, the secondprojection, and the third projection alternately arranged in the thirddirection D3 is equal to the width of the gap between two of the firstprojection, the second projection, and the third projection alternatelyarranged in the fourth direction D4.

The shape of the first through hole 201 is circular or elliptical, andthe shape of the second through hole 301 is one of circular, elliptical,and a shape formed by a convex arc and/or a concave arc. The shape ofthe third through hole 401 is a shape formed by concave arc or acombination of a concave arc and a convex arc. The circular orelliptical shape is one of the shapes formed by the convex arcs. Ofcourse, the shape formed by the convex arcs may further include othershapes.

The shape formed by the convex arc and/or the concave arc includes: ashape composed of a convex arc, a shape composed of four-segment concavearc, a shape composed of six-segment concave arc, a shape composed ofone-segment convex arc and five-segment concave arc, a shape composed ofeight-segment concave arc, a shape composed of four-segment convex arcand four-segment concave arc, a shape composed of six-segment convex arcand six-segment concave arc, a shape composed of seven-segment convexarc and five-segment concave arc, and a shape composed of eight-segmentconvex arc and eight-segment concave arc.

In the shape composed of four-segment concave arc, the four-segmentconcave arc is connected end to end.

In the shape composed of six-segment concave arc, the six-segmentconcave arc is connected end to end.

In the shape composed of one-segment convex arc and five-segment concavearc, the one-segment convex arc and the five-segment concave arcconnected end to end.

In the shape composed of eight-segment concave arc, the eight-segmentconcave arc is connected end to end.

In the shape composed of four-segment convex arc and four-segmentconcave arc, two ends of the convex arc are respectively connected totwo adjacent concave arcs, and two ends of the concave arc arerespectively connected to two adjacent convex arcs.

In the shape composed of six-segment convex arc and six-segment concavearc, two ends of the convex arc are respectively connected to twoadjacent concave arcs, and two ends of the concave arc are respectivelyconnected to two adjacent convex arcs.

In the shape composed of seven-segment convex arc and five-segmentconcave arc, the seven-segment convex arc and the five-segment concavearc are connected end to end. The seven-segment convex arc and thefive-segment concave arc are connected together at intervals.

In the shape composed of eight-segment convex arc and eight-segmentconcave arc, two ends of the convex arc are respectively connected totwo adjacent concave arcs, and two ends of the concave arc arerespectively connected to two adjacent convex arcs.

As shown in FIG. 5A, FIG. 5B, and FIG. 5C, the shape of the firstthrough hole 201 is circular or elliptical, and the shapes of the secondthrough hole 301 and the third through hole 401 are both a shapecomposed of four-segment convex arc and four-segment concave arc.

As shown in FIG. 6A, FIG. 6B, and FIG. 6C, the shape of the firstthrough hole 201 is circular or elliptical, the shape of the secondthrough hole 301 is circular or elliptical, and the third through hole401 is a shape composed of four-segment convex arc and four-segmentconcave arc.

As shown in FIG. 7A, FIG. 7B, and FIG. 7C, the shape of the firstthrough hole 201 is circular or elliptical, the second through hole 301is a shape composed of six-segment convex arc and six-segment concavearc, and the third through hole 401 is a shape composed of seven-segmentconvex arc and five-segment concave arc.

As shown in FIG. 8A, FIG. 8B, and FIG. 8C, the shape of the firstthrough hole 201 is circular or elliptical, the second through hole 301is a shape composed of eight-segment convex arc and eight-segmentconcave arc, and the third through hole 401 is a shape composed offour-segment convex arc and four-segment concave arc.

The shape composed of a convex arc, the shape composed of four-segmentconcave arc, the shape composed of six-segment concave arc, the shapecomposed of eight-segment concave arc, the shape composed offour-segment convex arc and four-segment concave arc, the shape composedof six-segment convex arc and six-segment concave arc, and the shapecomposed of eight-segment convex arc and eight-segment concave arc arecentrally symmetrical.

Shapes, sizes, and areas of any two of the first projection, the secondprojection, and the third projection are different.

The shape of the edge of one of the second projection and the thirdprojection in the third direction D3 or the fourth direction D4corresponds to a concave arc.

A sum of a radius of curvature of a shape of an edge of one of the firstprojection, the second projection, and the third projection and a widthof a predetermined gap is equal to a radius of curvature of the concavearc.

The predetermined gap is a gap between an edge of one of the firstprojection, the second projection, and the third projection and an edgeof the adjacent the first projection in one of the third direction D3and the fourth direction D4. A width of the predetermined gap in thethird direction D3 is equal to a width of the predetermined gap in thefourth direction D4.

An arc and an extended arc thereof corresponding to an edge of the thirdprojection facing the first projection and an arc and an extended arcthereof corresponding to an edge of the second projection facing thefirst projection form a predetermined shape, and the predetermined shapeincludes a circle or an ellipse.

A shape of each of the first projection is the same as or similar to thepredetermined shape.

A center of a shape of each of the first projection is the same as acenter of the predetermined shape.

When the shape of the first projection includes an ellipse, a long axisof the ellipse points to one of the second projection and the thirdprojection, a short axis of the ellipse points to the other of thesecond projection and the third projection.

An angle between the long axis of the ellipse and the first direction D1or the second direction D2 ranges between 0 degree and 90 degrees.

When a shape of the second projection includes a circle or an ellipse,and a shape of the third projection includes a concave arc or a combinedshape of a concave arc and a convex arc, the shape of the thirdprojection includes a curvature of one of at least four concave arcsthat is greater or less than another of the at least four concave arcs.

When a shape of the second projection and a shape of the thirdprojection both include a concave arc or a combined shape of a concavearc and a convex arc, a curvature of one of at least four concave arcsof the shape of the third projection is greater or equal to a curvatureof one of at least four concave arcs of the shape of the secondprojection.

In the above technical solution, since the mask assembly includes threemasks, the mask is provided with a through hole. The through hole has ashape formed by a convex arc and/or a concave arc. The masks arerespectively a first mask, a second mask, and a third mask. The firstthrough hole of the first mask has a first projection in thepredetermined coordinate system, the second through hole of the secondmask has a second projection in the predetermined coordinate system, andthe third through hole of the third mask has the third projection in thepredetermined coordinate system. The shapes of the opposite edges of theadjacent two of the first projection, the second projection, and thethird projections are complementary, so that the embodiment of thepresent disclosure can reduce the unused area between the pixels in thedisplay panel, thereby increasing the aperture ratio of the pixels.

Referring to FIG. 11, in a pixel arrangement structure according to afirst embodiment of the present invention, the pixel arrangementstructure includes a plurality of first pixel rows 20 and a plurality ofsecond pixel rows 10 arranged alternately. Each second pixel row 10includes a plurality of second pixels 32 and a plurality of third pixels31 arranged alternately and at intervals, and each first pixel row 20includes a plurality of first pixels 33 arranged at intervals. Two thirdpixels 31 and two second pixels 32 adjacent to the first pixel 33 form avirtual box SQ, and the first pixel 33 is arranged in the virtual box SQformed by the two third pixels 31 and the two second pixels 32 adjacentthereto, an area of the third pixel 31 is same as an area of the secondpixel 32, and the area of the third pixel 31 and the area of the secondpixel 32 are greater than an area of the first pixel 33.

In details, as illustrated in FIG. 11, in the first embodiment, a centerof the third pixel 31 coincides with a first vertex P1 of the virtualbox SQ, a center of the second pixel 32 coincides with a second vertexP2 adjacent to the first vertex P1 of the virtual box SQ, and a centerof the first pixel 33 coincides with a center C of the virtual box SQ.

Further, shapes of the third pixel 31, the second pixel 32, and thefirst pixel 33 are all square, and diagonal lines of each third pixel 31and each second pixel 32 in each second pixel row 10 are on a samestraight line, and a diagonal line of the first pixel 33 is parallel toa diagonal line of the third pixel 31. Therefore, four first sides ofeach third pixel 31 are respectively opposite to four first pixels 33adjacent thereto, four first sides of each second pixel 32 arerespectively opposite to four first pixels 33 adjacent thereto, and fourfirst sides of each first pixel 33 are respectively opposite to twothird pixels 31 and two second pixels 32 adjacent thereto.

Preferably, the third pixel 31, the second pixel 32, and the first pixel33 have different colors and are one of a red pixel, a blue pixel, and agreen pixel. In the first embodiment, the third pixel 31, the secondpixel 32, and the first pixel 33 emit red light, blue light, and greenlight respectively. Corresponding to the OLED display panel, that is,the third pixel 31, the second pixel 32, and the first pixel 33 includeorganic light emitting diodes that emit red light, blue light, and greenlight, respectively. It is understood that, in other embodiments of thepresent invention, the third pixel 31, the second pixel 32, and thefirst pixel 33 may also emit light of other colors.

It is noted that square pixels in this embodiment have advantages overoctagonal pixels. As illustrated in FIG. 15, compared to shapes of athird pixel 31 a and a second pixel 32 a being octagonal, and a shape ofa first pixel being a square, a distance between the third pixel 31 aand the first pixel 33 and a distance between the second pixel 32 a andthe first pixel are both a first length Gap. As illustrated in FIG. 15,under the same first length Gap, an embodiment of the present inventionincreases an area of the third pixel 31 and an area of the second pixel32 by setting both the third pixel 31 and the second pixel 32 to besquare. Corresponding to the OLED display panel, an area of an organiclight emitting diode is proportional to its lifetime, so that comparedwith the embodiment using the octagonal third pixel 31 a and theoctagonal second pixel 32 a, the pixel arrangement of the firstembodiment of the present invention has a longer lifetime withoutchanging the first length.

Similarly, referring to FIG. 16, compared with the embodiment whereshapes of the third pixel and the second pixel are both square, and theshape of the first pixel 33 b is octagonal, in an embodiment of thepresent invention same as the previous embodiment, by setting the shapeof the first pixel 33 to be square, the area of the first pixel isincreased and lifetime of the OLED display panel is increased withoutchanging the first length GAP.

Referring to FIG. 12, in a pixel arrangement structure according to asecond embodiment of the present invention, the pixel arrangementstructure includes a plurality of second pixel rows 10′ and a pluralityof first pixel rows 20′ arranged alternately. Each second pixel row 10′includes a plurality of third pixels 31′ and a plurality of secondpixels 32′ arranged alternately and at intervals, and each first pixelrow includes a plurality of first pixels 33′ arranged at intervals. Twothird pixels 31′ and two second pixels 32′ adjacent to the first pixel33′ form a virtual box SQ′, and the first pixel 33′ is arranged in thevirtual box SQ′ formed by the two third pixels 31′ and the two secondpixels 32′ adjacent thereto, an area of the third pixel 31′ is same asan area of the second pixel 32′, and the area of the third pixel 31′ andthe area of the second pixel 32′ are greater than an area of the firstpixel 33′.

In details, as illustrated in FIG. 12, in the second embodiment, acenter of the third pixel 31′ coincides with a first vertex P1′ of thevirtual box SQ′, a center of the second pixel 32′ coincides with asecond vertex P2′ adjacent to the first vertex P1′ of the virtual boxSQ′, and a center of the first pixel 33′ coincides with a center C′ ofthe virtual box SQ′. A shape of the first pixel 33′ is a circle. Thethird pixel 31′ and the second pixel 32′ both include four first sides301′ and four second sides 302′, and the first sides 301′ and the secondsides 302′ are alternately connected to form a closed figure. The firstside 301′ is an arc recessed toward an inside of the closed figure, andthe second side 302′ is a straight line. Therefore, four first sides301′ of each third pixel 31′ are respectively opposite to four firstpixels 33′ adjacent to the third pixel 31′, four first sides 301′ ofeach second pixel 32′ are respectively opposite to four first pixels 33′adjacent to the second pixel 32′.

It is worth mentioning that, in an ideal state of the second embodimentof the pixel arrangement structure, shapes of the third pixel 31′ andthe second pixel 32′ should be exactly the same, and radii of curvatureof four first sides 301′ of each third pixel 31′ and each second pixel32′ are also the same. In an actual manufacturing process of the secondembodiment of the pixel arrangement structure, due to existence ofmanufacturing errors (for example, manufacturing errors caused bydifferent states of a vapor deposition machine), shapes of the thirdpixel 31′ and the second pixel 32′ may be slightly different, and radiiof curvature of four first sides 301′ of each third pixel 31′ and eachsecond pixel 32′ may also be slightly deviated, which will not affectthe implementation of the present invention.

It should be noted that, in an actual production of FMM, it is difficultto produce square or pointed graphics regardless of etching or laser. Inan embodiment of the present invention, the first pixel 33′ is set to acircle, and arc-shaped first sides 301′ are set in the third pixel 31′and the second pixel 32′, which is more in line with the principle ofdiffusion and can effectively reduce difficulty of making the FFM. Inaddition, the circular first pixel 33′ is the shape with the smallestside length and the highest efficiency in the same area. Due to haloeffect of human eyes, a tiny non-circular luminous body will also beregarded as an approximately circular shape. Setting the first pixel 33′as a circular shape can maximize efficiency of the first pixel 33′ andmeet the halo effect of human eyes. By setting the four first sides 301′of each third pixel 31′ to be respectively opposite to four first pixels33′ adjacent to the third pixel 31′ and by setting the four first sides301′ of each second pixel 32′ to be respectively opposite to the fourfirst pixels 33′ adjacent to the second pixel 32′, spacing betweenpixels is maximized.

Preferably, the third pixel 31′, the second pixel 32′, and the firstpixel 33′ have different colors and are one of a red pixel, a bluepixel, and a green pixel. In the second embodiment, the third pixel 31′,the second pixel 32′, and the first pixel 33′ emit red light, bluelight, and green light respectively. Corresponding to the OLED displaypanel, that is, the third pixel 31′, the second pixel 32′, and the firstpixel 33′ include organic light emitting diodes that emit red light,blue light, and green light, respectively. It is understood that, inother embodiments of the present invention, the third pixel 31′, thesecond pixel 32′, and the first pixel 33′ may also emit light of othercolors.

Further, as illustrated in FIG. 17, compared with the first embodiment,in the second embodiment, when a distance between the third pixel andthe first pixel and a distance between the second pixel and the firstpixel, i.e., the first length Gap, are constant, areas of the thirdpixel 31′ and the second pixel 32′ are larger, but the area of the firstpixel 33′ is smaller. In the OLED display panel, lifetime of an organiclight emitting diode emitting blue light is the worst, while lifetime ofan organic light emitting diode emitting green light is better. Theoverall lifetime of the OLED display panel depends on the organic lightemitting diode with the worst lifetime. In the second embodiment of thepresent invention, although the area of the first pixel 33′ becomessmaller, the first pixel 33′ corresponds to an organic light emittingdiode that emits green light, and the second pixel 32′ corresponds to anorganic light emitting diode that emits blue light. In an actualimplementation, actual lifetime of the first pixel 33′ after the areathereof becomes smaller is still greater than actual lifetime of thesecond pixel 32′ after the area thereof becomes larger. Therefore, theoverall lifetime of the OLED display panel still depends on the actuallifetime of the second pixel 32′. The area of the second pixel 32′ islarger than that of the first embodiment, so that the overall lifetimeof the OLED display panel is larger than that of the first embodiment.

In details, in the second embodiment of the present invention, adistance from the first side of the third pixel 31′ to an edge of thefirst pixel 33′ opposite to the first side 301′ thereof and a distancefrom the first side 301′ of the second pixel 32′ to an edge of the firstpixel 33′ opposite to the first side 301′ thereof are both a firstlength Gap, a distance from a center of the third pixel 31′ to the firstside 301′ thereof and a distance from a center of the second pixel 32′to the first side 301′ thereof are both a second length b, and a radiusof the first pixel 33′ is a third length r.

During specific implementation, in order to make the actual lifetime ofthe first pixel 33′ after the area thereof becomes smaller still greaterthan the actual lifetime of the second pixel 32′ after the area thereofbecomes larger, thereby extending the overall lifetime of the OLEDdisplay panel, a pixel density of the pixel arrangement structurepreferably ranges from 200 ppi to 600 ppi, the first length Gappreferably ranges from 10 um to 30 um, the second length b preferablyranges from 10 um to 50 um, and the third length r preferably rangesfrom 4 um to 40 um.

Optionally, in a specific implementation of the second embodiment of thepresent invention, the first length Gap may be 20 um, the pixel densityof the pixel arrangement may be 200 ppi, a sum of the second length band the third length r may be 40 um, and the second length b may rangefrom 10 um to 30 um.

Optionally, in another specific implementation of the second embodimentof the present invention, the first length Gap may be 20 um, the pixeldensity of the pixel arrangement structure may be 250 ppi, a sum of thesecond length b and the third length r may be 28 um, and the secondlength b may range from 10 um to 21 um.

Optionally, in yet another specific implementation of the secondembodiment of the present invention, the first length Gap may be 20 um,the pixel density of the pixel arrangement structure may be 300 ppi, asum of the second length b and the third length r may be 20 um, and thesecond length b may range from 10 um to 15 um.

Optionally, in yet another specific implementation of the secondembodiment of the present invention, the first length Gap may be 20 um,the pixel density of the pixel arrangement structure may be 350 ppi, asum of the second length b and the third length r may be 14 um, and thesecond length b may be 10 um.

Optionally, in yet another specific implementation of the secondembodiment of the present invention, the first length Gap may be 15 um,the pixel density of the pixel arrangement structure may be 200 ppi, asum of the second length b and the third length r may be 45 um, and thesecond length b may range from 10 um to 33 um.

Optionally, in yet another specific implementation of the secondembodiment of the present invention, the first length Gap may be 15 um,the pixel density of the pixel arrangement structure may be 250 ppi, asum of the second length b and the third length r may be 33 um, and thesecond length b may range from 10 um to 24 um.

Optionally, in yet another specific implementation of the secondembodiment of the present invention, the first length Gap may be 15 um,the pixel density of the pixel arrangement structure may be 300 ppi, asum of the second length and the third length may be 25 um, and thesecond length b may range from 10 um to 18 um.

Optionally, in yet another specific implementation of the secondembodiment of the present invention, the first length Gap may be 15 um,the pixel density of the pixel arrangement structure may be 350 ppi, asum of the second length b and the third length r may be 19 um, and thesecond length b may range from 10 um to 14 um.

Optionally, in yet another specific implementation of the secondembodiment of the present invention, the first length Gap may be 15 um,the pixel density of the pixel arrangement structure may be 400 ppi, asum of the second length b and the third length r may be 15 um, and thesecond length b may range from 10 um to 11 um.

Optionally, in yet another specific implementation of the secondembodiment of the present invention, the first length Gap may be 25 um,the pixel density of the pixel arrangement structure may be 200 ppi, asum of the second length b and the third length r may be 35 um, and thesecond length b may range from 10 um to 26 um.

Optionally, in yet another specific implementation of the secondembodiment of the present invention, the first length Gap may be 25 um,the pixel density of the pixel arrangement structure may be 250 ppi, asum of the second length b and the third length r may be 23 um, and thesecond length b may range from 10 um to 17 um.

Optionally, in yet another specific implementation of the secondembodiment of the present invention, the first length Gap may be 25 um,the pixel density of the pixel arrangement structure may be 300 ppi, asum of the second length b and the third length r may be 15 um, and thesecond length b may range from 10 um to 11 um.

Referring to FIG. 13 and FIG. 14, in a pixel arrangement structureaccording to a third embodiment of the present invention, the pixelarrangement structure includes a plurality of second pixel rows 10″ anda plurality of first pixel rows 20″ arranged alternately. Each secondpixel row 10″ includes a plurality of third pixels 31″ and a pluralityof second pixels 32″ arranged alternately and at intervals, and eachfirst pixel row includes a plurality of first pixels 33″ arranged atintervals. Two third pixels 31″ and two second pixels 32″ adjacent tothe first pixel 33″ form a virtual box SQ″, and the first pixel 33″ isarranged in the virtual box SQ″ formed by the two third pixels 31″ andthe two second pixels 32″ adjacent thereto, an area of the third pixel31″ is same as an area of the second pixel 32″, and the area of thethird pixel 31″ and the area of the second pixel 32″ are greater than anarea of the first pixel 33″.

In details, as illustrated in FIG. 13 or FIG. 14, in the thirdembodiment, a center of the third pixel 31″ coincides with a firstvertex P1″ of the virtual box SQ″, a center of the second pixel 32″coincides with a second vertex P2″ adjacent to the first vertex P1″ ofthe virtual box SQ″, and a center of the first pixel 33″ coincides witha center C″ of the virtual box SQ″. A shape of the first pixel 33″ is acircle. The third pixel 31″ and the second pixel 32″ have the same shapeand both include four first sides 301″ and four second sides 302″, andthe first sides 301″ and the second sides 302″ are alternately connectedto form a closed figure. The first side 301″ is an arc recessed towardan inside of the closed figure, and the second side 302″ is an arcprotruding toward the inside of the closed figure, that is, the shape ofthe second side 302″ is similar to a bow arm of an arrow.

The specific arrangement, as illustrated in FIG. 13, four first sides301″ of each third pixel 31″ can be set to be respectively opposite tofour first pixels 33″ adjacent to the third pixel 31″, four first sides301″ of each second pixel 32″ can be set to be respectively opposite tofour first pixels 33″ adjacent to the second pixel 32″. Alternatively,as illustrated in FIG. 14, four second sides 302″ of each third pixel31″ are set to be respectively opposite to four first pixels 33″adjacent to the third pixel 31″, four second sides 302″ of each secondpixel 32″ are set to be respectively opposite to four first pixels 33″adjacent to the second pixel 32″.

It is worth mentioning that, in an ideal state of the third embodimentof the pixel arrangement structure, shapes of the third pixel 31″ andthe second pixel 32″ should be exactly the same, radii of curvature offour first sides 301″ of each third pixel 31″ and each second pixel 32″are also the same, and radii of curvature of four second sides 302″ ofeach third pixel 31″ and each second pixel 32″ are also the same. In anactual manufacturing process of the third embodiment of the pixelarrangement structure, due to existence of manufacturing errors (forexample, manufacturing errors caused by different states of a vapordeposition machine), shapes of the third pixel 31″ and the second pixel32″ may be slightly different, radii of curvature of four first sides301″ of each third pixel 31″ and each second pixel 32″ may also beslightly deviated, and radii of curvature of four second sides 302″ ofeach third pixel 31″ and each second pixel 32″ may also be slightlydeviated, which will not affect the implementation of the presentinvention.

It should be noted that, in an actual production of FMM, it is difficultto produce square or pointed graphics regardless of etching or laser. Inan embodiment of the present invention, the first pixel 33″ is set to acircle, and arc-shaped first sides 301″ and arc-shaped second sides 302″are set in the third pixel 31″ and the second pixel 32″, which is morein line with the principle of diffusion and can effectively reducedifficulty of making the FFM. In addition, the circular first pixel 33″is the shape with the smallest side length and the highest efficiency inthe same area. Due to halo effect of human eyes, a tiny non-circularluminous body will also be regarded as an approximately circular shape.Setting the first pixel 33″ as a circular shape can maximize efficiencyof the first pixel 33″ and meet the halo effect of human eyes.

Preferably, the third pixel 31″, the second pixel 32″, and the firstpixel 33″ have different colors and are one of a red pixel, a bluepixel, and a green pixel. In the third embodiment, the third pixel 31″,the second pixel 32″, and the first pixel 33″ emit red light, bluelight, and green light respectively. Corresponding to the OLED displaypanel, that is, the third pixel 31″, the second pixel 32″, and the firstpixel 33″ include organic light emitting diodes that emit red light,blue light, and green light, respectively. It is understood that, inother embodiments of the present invention, the third pixel 31″, thesecond pixel 32″, and the first pixel 33″ may also emit light of othercolors.

Further, compared with the second embodiment, in the third embodiment,the second side 302″ is an arc protruding toward an outside of theclosed figure, so that areas of the third pixel 31″ and the second pixel32″ are larger and lifetime can be further improved compared with thesecond embodiment.

Meanwhile, in each embodiment of the present invention, shapes and areasof the third pixel and the second pixel are completely the same, suchthat in the manufacturing process of the OLED display panel adopting thepixel arrangement structure of the present invention, the third pixeland the second pixel can be manufactured by using the same metal mask.This reduces production costs and enhances product competitiveness.

In summary, an embodiment of the present invention provides a pixelarrangement structure including a plurality of second pixel rows and aplurality of first pixel rows arranged alternately. Each second pixelrow includes a plurality of third pixels and a plurality of secondpixels arranged alternately and at intervals, and each first pixel rowincludes a plurality of first pixel s arranged at intervals. Two f thirdpixels and two second pixels adjacent to the first pixel form a virtualbox, and the first pixel is arranged in the virtual box formed by thetwo third pixels and the two second pixels adjacent to the first pixel,an area of the third pixel is same as an area of the second pixel, andthe area of the third pixel and the area of the second pixel are greaterthan an area of the first pixel. The pixel arrangement structure isapplicable in an OLED display panel, which can reduce difficulty ofmanufacturing the OLED display panel and extend lifetime of the OLEDdisplay panel.

In the above, the present disclosure has been disclosed in the abovepreferred embodiments, but the preferred embodiments are not intended tolimit the present disclosure. Various changes and modifications can bemade by those skilled in the art without departing from the spirit andscope of the present disclosure. The scope of protection of the presentdisclosure is therefore defined by the scope of the claims.

What is claimed is:
 1. A pixel arrangement structure, comprising: aplurality of first pixel rows and a plurality of second pixel rowsarranged alternately; wherein: each of the first pixel rows comprises aplurality of first pixels arranged at intervals, and each of the secondpixel rows comprises a plurality of second pixels and a plurality ofthird pixels arranged alternately and at intervals; a shape of the firstpixel comprises a shape formed by an arc; each of the second pixel andthe third pixel comprises a plurality of concave arcs and a plurality ofconvex arcs, the plurality of concave arcs and the plurality of convexarcs of the second pixel are alternately connected and form a closedfigure, and the plurality of concave arcs and the plurality of convexarcs of the third pixel are alternately connected and form a closedfigure; wherein a pixel density of the pixel arrangement structure is200 ppi; wherein when the shape of each of the first pixels comprises anellipse, a long axis of the ellipse points to one of each of the secondpixels and each of the third pixels, a short axis of the ellipse pointsto the other of each of the second pixels and each of the third pixels;wherein when the shape of the first pixel is the ellipse, the shape ofthe second pixel and the shape of the third pixel are both shapes thatcomprises an inner concave arc or a combination of the inner concave arcand an outer convex arc, a curvature of one of at least four innerconcave arcs included in the shape of the third pixel is greater than acurvature of one of at least four inner concave arcs included in theshape of the second pixel; wherein a width of the gap between the firstpixel and the second pixel in the third direction is equal to a width ofthe gap between the first pixel and the third pixel in the fourthdirection.
 2. The pixel arrangement structure according to claim 1,wherein the first pixel, the second pixel, and the third pixel havedifferent colors.
 3. The pixel arrangement structure according to claim1, wherein the plurality of concave arcs of the second pixel have thesame radius of curvature, and/or the plurality of concave arcs of thethird pixel have the same radius of curvature.
 4. The pixel arrangementstructure according to claim 1, wherein the plurality of convex arcs ofthe second pixel have the same radius of curvature, and/or the pluralityof convex arcs of the third pixel have the same radius of curvature. 5.The pixel arrangement structure according to claim 1, wherein a radiusof curvature of the plurality of concave arcs of the third pixel isequal to a radius of curvature of the plurality of convex arcs of thethird pixel, and/or a radius of curvature of the plurality of concavearcs of the second pixel is equal to a radius of curvature of theplurality of concave arcs of the second pixel.
 6. The pixel arrangementstructure according to claim 1, wherein the plurality of concave arcs ofeach of the third pixels are respectively opposite to the four firstpixels adjacent to the third pixel, and the plurality of concave arcs ofeach of the second pixels are respectively opposite to the four firstpixels adjacent to the second pixel; or the plurality of convex arcs ofeach of the third pixels are respectively opposite to the four firstpixels adjacent to the third pixel, and the plurality of convex arcs ofeach of the second pixels are respectively opposite to the four firstpixels adjacent to the second pixel.
 7. The pixel arrangement structureaccording to claim 1, wherein a distance from the plurality of concavearcs of the third pixel to an edge of the first pixel opposite to theplurality of concave arcs of the third pixel and a distance from theplurality of concave arcs of the second pixel to an edge of the firstpixel opposite to the plurality of concave arcs of the second pixel areboth a first length, a distance from a center of the third pixel to theplurality of concave arcs of the third pixel and a distance from acenter of the second pixel to the plurality of concave arcs of thesecond pixel are both a second length, and a radius of the smallestcircumscribed circle of the first pixel is a third length; the firstlength ranges from 10 um to 30 um, the second length ranges from 10 umto 50 um, and the third length ranges from 4 um to 40 um.
 8. The pixelarrangement structure according to claim 1, wherein a center of thefirst pixel coincides with an end point of a radius of curvature of theplurality of concave arcs of the third pixel, and/or a center of thefirst pixel coincides with an end point of a radius of curvature of theplurality of concave arcs of the second pixel.
 9. The pixel arrangementstructure according to claim 1, wherein a center of the first pixelcoincides with a center of a circle corresponding to the plurality ofconcave arcs of the third pixel, and/or a center of the first pixelcoincides with a center of a circle corresponding to the plurality ofconcave arcs of the second pixel.
 10. The pixel arrangement structureaccording to claim 1, wherein the shape of the first pixel is anellipse.
 11. The pixel arrangement structure according to claim 10,wherein the second pixel comprises four concave arcs and four convexarcs, which are alternately connected and form a closed figure, and thethird pixel comprises four concave arcs and four convex arcs, which arealternately connected and form a closed figure.
 12. The pixelarrangement structure according to claim 1, wherein the second pixelsand the third pixels are alternately arranged in at least one of a firstdirection, a second direction, a third direction, and a fourthdirection, the first direction is perpendicular to the second direction,the third direction is a direction having an angle of less than 90degrees with the first direction, and the fourth direction isperpendicular to the third direction.
 13. The pixel arrangementstructure according to claim 12, wherein a shape of an edge of one ofthe second pixels and the third pixels in the third direction or thefourth direction comprises a concave arc, a sum of a radius of curvatureof a shape of an edge of the first pixels facing one of the secondpixels and the third pixels and a width of a predetermined gap is equalto a radius of curvature of the concave arc included in the edge of oneof the second pixels and the third pixels in the third direction or thefourth direction.
 14. The pixel arrangement structure according to claim13, wherein the predetermined gap is a gap between an edge of one of thesecond pixels and the third pixels and an edge of each adjacent firstpixel in one of the third direction and the fourth direction.
 15. Thepixel arrangement structure according to claim 13, wherein a width ofthe predetermined gap in the third direction is equal to a width of thepredetermined gap in the fourth direction.
 16. The pixel arrangementstructure according to claim 13, wherein an arc and an extended arcthereof corresponding to an edge of third pixel facing the first pixeland an arc and an extended arc thereof corresponding to an edge of thesecond pixel facing the first pixel form a predetermined shape; andwherein the predetermined shape comprises a circle or an ellipse. 17.The pixel arrangement structure according to claim 16, wherein a centerof a shape of the first pixels is the same as a center of thepredetermined shape.
 18. The pixel arrangement structure according toclaim 13, wherein a radius of curvature of one of the plurality ofconcave arcs of the third pixel is greater than a radius of curvature ofanother of the plurality of concave arcs of the third pixel; or a radiusof curvature of one of the plurality of concave arcs of the third pixelis greater than or equal to a radius of curvature of one of theplurality of concave arcs of the second pixel.
 19. A display panelcomprising the pixel arrangement structure according to claim 1.